An infrared study of Be stars based on ISO SWS01 spectra

被引：1

作者：

Zhang, Pin ^{[1
]}

Fu, Zai-Qi ^{[1
,2
]}

机构：

[1] Yunnan Univ, Cosm Ray Inst, Kunming 650091, Peoples R China

[2] Zhaotong Teachers Coll, Dept Phys, Zhaotong 657000, Peoples R China

来源：

RESEARCH IN ASTRONOMY AND ASTROPHYSICS | 2009年 / 9卷 / 07期

基金：

中国国家自然科学基金;

关键词：

stars: circumstellar matter; infrared: stars; stars:; emission-line; Be; SHORT-WAVELENGTH SPECTROMETER; MICRON SPECTRA; CLASSIFICATION;

D O I：

10.1088/1674-4527/9/7/005

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The Infrared Space Observatory (ISO) Short-Wavelength Spectrometer (SWS) spectra of 10 Be stars are presented. It can be seen that the Be stars show a diversity in their ISO SWS01 spectral classifications by Kraemer et al., from naked stars, stars associated with dust, stars with warm dust shells, stars with cool dust shells to very red sources. In addition, the Br alpha/HI(14-6) line flux ratio derived for the sample stars is compared with that of P Cyg, and it is found that the line ratio of Be stars which were investigated show not only lower values as suggested by Waters et al., but also larger values. Therefore, the line ratio cannot be used to judge whether a star is a Be star or not.

引用

页码：770 / 776

页数：7

共 22 条

[1]

Bouwman J, 2000, ASTRON ASTROPHYS, V360, P213

[2]

COLLINS GW, 1987, IAU C 92 PHYS BE STA

[3]

deGraauw T, 1996, ASTRON ASTROPHYS, V315, pL49

[4]

Hony S, 2000, ASTRON ASTROPHYS, V355, P187

[5] RECOMBINATION-LINE INTENSITIES FOR HYDROGENIC IONS .1. CASE-B CALCULATIONS FOR H-I AND HE-II [J].

HUMMER, DG ;

STOREY, PJ .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1987, 224 (04) :801-&

[6]

JASCHEK M, 1982, PUBLICATION SPECIAL

[7]

JASCHEK M, 1995, III67A VIZIER

[8]

Kessler MF, 1996, ASTRON ASTROPHYS, V315, pL27

[9] Classification of 2.4-45.2 micron spectra from the Infrared Space Observatory Short Wavelength Spectrometer [J].

Kraemer, KE ;

Sloan, GC ;

Price, SD ;

Walker, HJ .

ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 2002, 140 (02) :389-406

[10] Classification and identification of IRAS sources with low-resolution spectra [J].

Kwok, S ;

Volk, K ;

Bidelman, WP .

ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 1997, 112 (02) :557-584

← 1 2 3 →